Longman Dictionary of Contemporary English homepage

Topic: BIOLOGY

Date: 1400-1500
Language: Latin
Origin: membrana 'skin', from membrum; MEMBER

membrane

 noun
     
mem‧brane [uncountable and countable]
1HB a very thin piece of skin that covers or connects parts of your body:
Loud noise can damage the delicate membrane in the ear.
2T a very thin layer of material that covers something
—membranous adjective
Definition of membrane from the Longman Dictionary of Contemporary English within
the topic BIOLOGY
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